Flexible packaging · free calculators

Structure / GSM / Yield Calculator

Laminate ko layer by layer banao. GSM = micron × density, paper mill GSM mein, aur sirf dry ink / adhesive. Result: total GSM, m²/kg, ₹/m² aur ₹/kg.

Structure — layer by layer

Film = micron × density. Paper = mill GSM. Har do film ke beech ek adhesive bond apne aap aata hai.

Presets are published specs, not a standard. Microns apne job ke hisaab se badlo.

  1. Layer 1 · outside16.80 GSM
    Example

    Density source: Cosmo Films CF-B0-CPF BOPET TDS — 1.40 g/cc (12 µm = 16.80 GSM).

  2. Layer 217.60 GSM
    Example

    Density source: Same base film as PET (Cosmo 1.40 g/cc) + metal add-on. Assumption: mid-point of the 0.5–1.0 GSM aluminium deposit in CloudFilm's density guide. Use the metalliser's measured GSM when you have it.

  3. Layer 3 · sealant64.54 GSM
    Example

    Density source: RollSpec materials table (nominal 0.922). Blown PE is often an LD + LLD blend and can run a few percent heavy. Once a roll is in the factory, use measured GSM.

Adhesive type

Dry 2.0–2.8 GSM per bond on film/foil (Cytech HILAM GP-50 guide; 3.0–3.5 on paper). 2.5 is GSMCalculator's 2-ply default. Solids % is a starting value — read it off your adhesive TDS.

Example

1.5 GSM average dry ink is RollSpec's printed snack-laminate example. Gravure starting bands per colour (GSMCalculator): shallow 1.0–1.2, standard 1.2–1.8, heavy 1.8–2.5, then × coverage %.

Example

Sirf dry ink aur adhesive GSM mein judta hai. Wet coat weight (solvent ke saath) laminate mein nahi rehta — usse GSM mat badhao. Wet kg ke liye Ink & Adhesive tool dekho.

Films98.94 GSM
Dry adhesive (2 bonds)5.00 GSM
Dry ink1.50 GSM
Total laminate105.44 GSM
Laminate material₹157.29/kg

Result

Live — jaise hi layer badloge, yeh badlega.

Total GSM

105.44

films + dry adhesive + dry ink

Yield

9.484

m² per kg = 1000 ÷ GSM

Material ₹/m²

₹16.585

Σ GSM ÷ 1000 × ₹/kg

Material ₹/kg

₹157.29

₹/m² ÷ (GSM ÷ 1000)

Layer-by-layer GSM and cost
LineGSM₹/kg₹/m²
PET16.801452.4360
Adhesive (bond 1, dry)2.504001.0000
MET PET17.601853.2560
Adhesive (bond 2, dry)2.504001.0000
LDPE (POLY)64.541258.0675
Ink (dry)1.505500.8250

Rates tagged Example are illustrations from our worked example, not market prices. Densities are library starting values — supplier TDS ya weighed GSM hamesha better hai.

These calculators are estimating aids. Example rupees are not market prices. Densities are library starting values — use your supplier TDS or a weighed GSM. GST default 18%; confirm HSN with your CA. This is not tax advice.